Tony Li <[email protected]> writes:
Hi Chris,
Shutting down a link does not require centralized management action. It is
quite sufficient to coordinate it between the routers on the ends of the link.
Note that one can also conceive of a situation where there is a unilateral,
ungraceful shutdown too. That requires zero coordination.
I'm curious about these new power-sleep modes.
- Are these offered for single laser or single links or is it more of using
only a few links in a bundle of links (LAG)?
Power sleep applies to both single lasers or LAGs.
- If single laser or single link, what's might a transition time for an
interface to go from power-sleep to fully-functional/bandwidth-capable look
like -- i.e., is it faster than going from shut to no shut on a typical laser?
? These are typical lasers. No sharks are involved.
Well you never know if some new transceiver HW had been created capable of some
fanciness, but apparently no -- no sharks. :)
Thanks,
Chris.
Power-sleep is a software state to describe an interface that is intentionally
shut off and can be reactivated when demand arises. This is intentionally called
out to separate it from administratively down or failed.
- What might typical power savings (%) look like when we put an interface into
power sleep mode?
100% of laser power. Possibly additional savings due to associated other
circuitry (MACsec, gearboxes, PHY, etc.). Power for all of these should be
included in the interface or parent power groups as appropriate.
- What does power sleep bandwidth look like (maybe % wise)?
0% bandwidth on single lasers. On a LAG, the sleeping bandwidth is described
in section 7.2.3.
T
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